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EV1767B is a 65V/300mA LED driver EVB based on JW1767B.

The JW1767B is a constant current LED regulator high current accuracy which applies to single stage step-down power facto corrected LED drivers.600V power MOS is integrated, which can signifi cantly simplify thedesign of LED lighting system.

High accuracy of output current is achieved by sampling the output current directly. Critical conduction mode operation reducesthe switching losses and largely increases the efficiency. JW1767Bis supplied from the output directly, and auxiliary winding is not needed.

JW1767B has multi-protection functions which largely enhance the
safety and reliability of the system, including VCC over-voltage protection, VCC UVLO, short-circuit protection, LED open protection, cycle-by-cycle current limit and over-temperature protection.


◆No auxiliary winding
◆600V high voltage MOSFET integrated
◆High current accuracy of line and load regulation
◆High power factor with low output current-ripple
◆Critical conduction mode
◆High efficiency over wide operating range
◆Cycle-by-cycle current limit
◆LED short protection
◆LED open protection
◆Over-temperature protection
◆Compact SOP7 package

 Typical Application